Metal collar for luminaires



Aug. 14. 1928.

w. A. INGLER METAL COLLAR FOR LUMINAIRES Filed July 24, 1926 INVENTORjham ATTORNEY Patented Aug, 14, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM A. INGLER OF NEWARK, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TOHOLOPHANE COMPANY, I NC., NEW YORK, N. Y., A CORPORATION OF NEW YORK.

METAL COLLAR FOR LUMINAIRES.

Application filed July 24, 1926.

The present invention relates to metal collars for luminaires and ismore particularly directed to a metal collar suitable for supportingstreet lighting luminaires.

The present invention contemplates a metal collar suitable for use withasymmetric retracting luminaires which, when placed near the. curb,light up the road or street effectively and at the same time keepbuildings in comparative darkness. Where such luminaires utilize twoglass envelopes, such as shown in Dorey Patent-1,554,563, grantedSeptember 22, 1925, these envelopes may be provided with interengagingparts which fix the angular positions of the glass envelopes relative toone another, or other means for insuring apredetermined alignment ofparts may be used. This double glass cover will be supported about the.light source and so placed that a small amount of light is directedtoward the buildings while the most of the light is directed onto theroad or street. An object of the present invention is to provide a'metal collar for clamping such glass envelopes together as well as toprovide a carrier or support for them in which they may be orientated.as a unit after the collar has been secured in the fixed support such asa part of the lamp standard. A further object of the present inventionis to provide a luminaire and support such that the parts may be kept inpredetermined alignment and supported in a standard or the like in theproper position.

for effectively. illuminating the street.

' By employing the present invention, it is possible to easily assembleand construct a luminaire intended for asymmetric light distributionwhich may be readily mounted in the lamp standard or other support andturned to the correct position for proper illumination in the desireddirection.

The accompanying drawings show, for

purposes of illustration, two of the. many possible embodiments in whichthe present invention,may take form, it being understood that thedrawings are illustrative of the invention rather than limiting thesame.

In these drawings:

Figure 1 is a sectional view through a luminaire showing one form ofmetal collar;

Figure 2 is a sectional view, with parts in elevation, showing thecollar on an enlarged scale;

Serial No. 124,632.

; Figure 3 is a sectional view of a clamping rmg; V. a

Figure 4 is an enlarged detailed View of a fragment of the collar; andFigure 5 is a view similar to Figure 2 illustrating a modified 'form ofconstruction. The outer and inner glass envelopes of a street lightingluminaire are indicated at 10 and 11. These glass envelopes may have thegeneral shape and optical properties of the lumin'aire shown in theDorey Patent #1,- 554,563 above referred to. Typical desireddistributions of this type of luminaire are so designed that most of thelight is directed onto the street, only a small portion being permittedto escape toward the buildings so that they will be kept insemidarkness. The invention is, however, equally applicable to anyvdouble glass envelope intended for asymmetric or special distribution.

According to the construction shown in Figures 1 to 5, the two pieces ofglass may be held in proper angular position relative to one another bya number of cooperative lugs 12 and recesses 13 carried on the out; sideof the inner envelope and the inside of the outer envelope. As hereshown these lugs and recesses are at the top, but they may be placedmany other convenient position. These lugs are so arranged that theglassluminaires must'be assembled in a predetermined angular positionand so that they can not be turned out of place.

A metal supporting member or collar 14 passes up through the openings inthe glass envelopes. This collar may be in the form of a sheet metalstamping, and is flanged in the lower end, as indicated at 15, to engageunderneath the inner surface of the inner envelope. It is threaded nearthe upper end as indicated at 16 so as to engage with a supportingfixture provided with a threaded-coupling. The extreme upper end of themetalsupport'ing member 14 may be flanged inwardly as indicated at 17 toprovide stiifness. in order to space the flange 15 of the supportingmember, from the glass so that it can .be revolved more readily, the,

readily. A ring 19, having I a depending flange arranged to pass downaround the outer upper end of the outer envelope 10, is slitted andstamped to such shapethat it may be threaded down along the threads 16on the collar. The 'ringis threaded in place and then soldered asindicated at 21 to the collar to prevent removal.

A modified form of construction is indicated in Figure 5. A tubularmetal supporting member or collar is provided with a slot or notch 31 toengage with :1 lug 32 extending inwardly from the glass while the upperend of this collar is threaded as indicated at 33. A ring 34 has adownwardly extending flange 35 notched as indicated at 36 to cooperatewith lugs 37 on the outer glass envelope. The rin 34; and collar member30 are non-rotatabl connected as, for example, by a lug 38 which extendsinto a keyway 39. A ring is threaded onto the outside of the collar 30and is brought down tightly against the ring34 to secure the partstogether. This ring 40 also provides a holding member for the definitealignment of the 'luminaire. This may be accomplished by providing a lugll-which extends upwardly from the ring 34 to engage some fixed part ofthe support.

When a luminaire provided with the metal collar such as shown in Figures1 to 5, inclusive, is assembled, it is ready to be installed inthe'fifiture. The unit may be threaded into place in the fixed supportand the metal parts clamped in place in any suitable manner. When themetal parts are held non-rotatably, one can turn the glass relative tothe metal so as to bring it to the proper position to direct the lightrays as desired. 7

It is obvious that the invention may be embodied in many forms andconstructions, and it is to be understood that the particular formsshown are but a few of the many forms. v a

What is claimed is:

1. In combination, a luminaire having an inner glass envelopeand anouter glass envelope, the two envelopes having prisms for distributinglight rays in a'predetermined manner, a tubular metallic support passingupwardlyv through'the luminaire, the upper end of'the support beingthreaded and the lower end having a flange for engaging the lowersurface of the inner glass envelope, a

7 disk carried outside the support, screw threaded means cooperativewith the supportfor forcing the disk against the top of the outerenvelope, and means for insuring 'a predetermined alignment of the glassenvelopes. v p

2. In combination, a luminaire having an inner glass envelope and'anouter glass envelope, the two envelopes having prisms for distributinglight rays in a predetermined manner, a tubular metallic support passingupwardly through the luminaire, the upper end of the support beingthreaded and the lower end having a flange for engaging the lowersurface of the inner glass envelope,

a disk carried outside the support, screw threaded means cooperativewith the support forforcing the disk against the top of the outerenvelope, and interlocking lugs and recesses carried by the glassenvelopes for insuring a predetermined adjustment of the glassenvelopes.

3. In combinatiom'a luminaire having an inner glass envelope and anouter glass envelope, the two envelopeshaving prisms for distributinglight rays ina predetermined manner, a tubular metallic support passingupwardly through the luminaire, the upper end of the support beingthreaded and the lower'end havin a flange for engaging the lower surfaceof the inner glass envelope, a disk carried outside the support, screwthreaded means cooperative with the support for forcing the disk againstthe top of the outer envelope, and interlocking lugs and recessescarried by the glass envelopes for insuring a predetermined adjustmentof the glass envelopes, the two glass envelopes being bodily movable inthe support as a unit for effecting orientation of the luminaire. i

4. In combination, a luminaire having an inner glass envelope and anouter glass onvelope, the two envelopes having prisms for distributinglight rays in a predetermined manner, a tubular metallic support passingupwardly through the luminaire, the upper end ofthe supportbeingtthreaded and the lower endhaving a flange for engaging the lowersurface of the inner glass envelope, a disk permanently secured to theoutside of the support and held against the top of the outer envelope,and means for insuring a predeterminedalign'mentof the glass envelopes.I j

5. In combination, a luminaire having an inner glass envelope and anouter glass envelope, the two envelopes having prisms'for distributinglight rays in a predetermined manner, a tubular metallic support passingupwardly through the" luminaire, the upper end of the support beingthreaded and the lower end having a flange for engaging the lowersurface of the inner glass envelope,

a disk permanently secured to the outside 6. In combination, a luminairehaving an I inner glass envelope and an outer glass envelope, the twoenvelopes having prisms for distributing "light rays in a predeterminedmanner, a tubular metallic support passing upwardly through theluminaire, the upper end of the support being threaded and the lower endhaving a flange for engaging the lower surface of the inner glassenvelope, a disk permanently secured to the outside of the support andheld against the top of the outer envelope, and interlocking lugs andrecesses carried by the glass envelopes for insuring a predeterminedadjustment of the glass envelopes, the two glass envelopes being bodilymovable in the support as a unit for effecting orientation of theluminaire.

7. In combination, a luminaire having an inner glass envelope, an outerglass envelope and interlocking aligning lugs carried by the envelopefor preventing relative rotation, a tubular metallic support passingupwardly through the top of the luminaire and having a flange extendingunderneath the inner envelope to support the same, a disk permanentlysecured to the outside of the support and held against the top of theouter envelope, the luminaire being angularly movable about the supportto effect an orientation of the luminaire.

8. In combination, a luminaire having an inner glass envelope, an outerglass envelope and interlocking aligning lugs carried by the envelopesfor preventing relative rotation, a tubular metallic support passingupwardly through the top of the luminaire and having a flange extendingunderneath the inner envelope, the flange having small bosses to engagewith the surface of'the inner envelope, a disk permanently secured tothe outside of the support and held against the top of the outerenvelope, the luminaire being angularly movable about the support toeflect an orientation of the luminaire.

Si ing and State of Ohio this 22nd day of July WILLIAM A. INGLER.

gned at Newark in the county of Lick-

